asyncrat | 06c73da1c0fdbb10efa56ee3a0fb13685c4b395e4aa9008024c657601f3960b3

General

Target

sample.exe
Size

194KB
MD5

76bea7506af30bdecc70c3d361819f28
SHA1

4a07972df9558c3bcfc932997d86453d9006ddbb
SHA256

06c73da1c0fdbb10efa56ee3a0fb13685c4b395e4aa9008024c657601f3960b3
SHA512

9815ab55d978a0c1974b29c82eff2b69d770a77fbbf157d8b3df807f31393de4f3a980460e24e4b2f62628ab36de95caf79e28fc0b21e9684e01762433549e30
SSDEEP

3072:euK0THf52i3H3bvOoAtLYJTlG/OwWREQjd2x:euK+cC3bjAaTc

Score

10^/10

asyncrat azazel rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Azazel

C2

azazelxd.duckdns.org:5555

127.0.0.1:5555

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
svchost.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1208-133-0x0000000000870000-0x00000000008A6000-memory.dmp	asyncrat
C:\Users\Admin\AppData\Roaming\svchost.exe	asyncrat
C:\Users\Admin\AppData\Roaming\svchost.exe	asyncrat

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

sample.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation sample.exe
Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1252 svchost.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

840 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1240 timeout.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	sample.exe

pid	process
1252	svchost.exe

pid	process
840	schtasks.exe

pid	process
1240	timeout.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

sample.exe

pid	process
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe
1208	sample.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

sample.exesvchost.exe

description pid process

Token: SeDebugPrivilege 1208 sample.exe
Token: SeDebugPrivilege 1252 svchost.exe

description	pid	process
Token: SeDebugPrivilege	1208	sample.exe
Token: SeDebugPrivilege	1252	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

sample.execmd.execmd.exe

description	pid	process	target process
PID 1208 wrote to memory of 4744	1208	sample.exe	cmd.exe
PID 1208 wrote to memory of 4744	1208	sample.exe	cmd.exe
PID 1208 wrote to memory of 4744	1208	sample.exe	cmd.exe
PID 1208 wrote to memory of 4776	1208	sample.exe	cmd.exe
PID 1208 wrote to memory of 4776	1208	sample.exe	cmd.exe
PID 1208 wrote to memory of 4776	1208	sample.exe	cmd.exe
PID 4776 wrote to memory of 1240	4776	cmd.exe	timeout.exe
PID 4776 wrote to memory of 1240	4776	cmd.exe	timeout.exe
PID 4776 wrote to memory of 1240	4776	cmd.exe	timeout.exe
PID 4744 wrote to memory of 840	4744	cmd.exe	schtasks.exe
PID 4744 wrote to memory of 840	4744	cmd.exe	schtasks.exe
PID 4744 wrote to memory of 840	4744	cmd.exe	schtasks.exe
PID 4776 wrote to memory of 1252	4776	cmd.exe	svchost.exe
PID 4776 wrote to memory of 1252	4776	cmd.exe	svchost.exe
PID 4776 wrote to memory of 1252	4776	cmd.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1208

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:4744

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
3⤵
- Creates scheduled task(s)
PID:840

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp981E.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:4776

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1240

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1252

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp981E.tmp.bat
Filesize
151B

MD5
cb783381fdf1b836c489328454808fa6

SHA1
2921f8abfbbe00e413987292c8c162d055032569

SHA256
79dd2c983731b3c1740bc449d2660b023e31dc6f56b786abd912d0250be0a92d

SHA512
dea9089a45db9c3ff52844b33f2aa38db9db256ede5d1cd91c44b7b899c94748153f5b705dbcfbe6b610595b31980028c71f47c6fa9803952548cb8e7c4cfc87

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
Filesize
194KB

MD5
76bea7506af30bdecc70c3d361819f28

SHA1
4a07972df9558c3bcfc932997d86453d9006ddbb

SHA256
06c73da1c0fdbb10efa56ee3a0fb13685c4b395e4aa9008024c657601f3960b3

SHA512
9815ab55d978a0c1974b29c82eff2b69d770a77fbbf157d8b3df807f31393de4f3a980460e24e4b2f62628ab36de95caf79e28fc0b21e9684e01762433549e30

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
Filesize
194KB

MD5
76bea7506af30bdecc70c3d361819f28

SHA1
4a07972df9558c3bcfc932997d86453d9006ddbb

SHA256
06c73da1c0fdbb10efa56ee3a0fb13685c4b395e4aa9008024c657601f3960b3

SHA512
9815ab55d978a0c1974b29c82eff2b69d770a77fbbf157d8b3df807f31393de4f3a980460e24e4b2f62628ab36de95caf79e28fc0b21e9684e01762433549e30

Download Submit
memory/1208-133-0x0000000000870000-0x00000000008A6000-memory.dmp

Filesize
216KB

Download
memory/1208-134-0x0000000005340000-0x0000000005350000-memory.dmp

Filesize
64KB

Download
memory/1208-135-0x0000000005350000-0x00000000053EC000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads